EP 4291598 A1 20231220 - SEMICRYSTALLINE PULVERULENT POLYARYLETHERSULFONES AND METHOD TO MAKE THEM
Title (en)
SEMICRYSTALLINE PULVERULENT POLYARYLETHERSULFONES AND METHOD TO MAKE THEM
Title (de)
TEILKRISTALLINE PULVERFÖRMIGE POLYARYLETHERSULFONE UND VERFAHREN ZU IHRER HERSTELLUNG
Title (fr)
POLYARYLÉTHERSULFONES PULVÉRULENTES SEMI-CRISTALLINES ET PROCÉDÉ POUR LEUR FABRICATION
Publication
Application
Priority
- US 202163147822 P 20210210
- US 2022013653 W 20220125
Abstract (en)
[origin: US2022251416A1] A semicrystalline polyarylethersulfone (PAES) useful for additive manufacturing may be made by a method comprising: dissolving an amorphous polyarylethersulfone in a polar aprotic halogenated hydrocarbon solvent at a temperature adequate to effectively form a solution, and subsequently and spontaneously bring about reprecipitation of a semicrystalline polyarylethersulfone from the solution. The semicrystalline polyarylethersulfone may have a crystallinity of at least 30% by weight. The semicrystalline PAES, upon being heated, melting and uniting together in layers during additive manufacturing cools without substantially recrystallizing, allows for deformation-free articles to be formed having low residual stress.
IPC 8 full level
C08G 65/40 (2006.01); C08G 65/46 (2006.01); C08G 75/23 (2006.01)
CPC (source: EP IL KR US)
B29C 64/153 (2017.08 - IL US); B29C 64/314 (2017.08 - IL US); B33Y 10/00 (2014.12 - IL KR US); B33Y 40/10 (2020.01 - IL KR US); B33Y 70/00 (2014.12 - IL KR US); C08G 65/4056 (2013.01 - EP IL KR); C08G 65/46 (2013.01 - EP IL KR); C08G 75/23 (2013.01 - EP IL KR US); C08J 3/093 (2013.01 - IL US); C08J 3/11 (2013.01 - IL US); C09D 181/06 (2013.01 - IL US); B29K 2995/004 (2013.01 - IL US); C08G 2250/00 (2013.01 - IL US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
US 2022251416 A1 20220811; CN 116783233 A 20230919; EP 4291598 A1 20231220; IL 304444 A 20230901; JP 2024506236 A 20240213; KR 20230117210 A 20230807; WO 2022173587 A1 20220818
DOCDB simple family (application)
US 202217583671 A 20220125; CN 202280011535 A 20220125; EP 22704140 A 20220125; IL 30444423 A 20230712; JP 2023541957 A 20220125; KR 20237022794 A 20220125; US 2022013653 W 20220125